Registry data as of Aug 27, 2026

Rebecca Williams, PHD

Surgery Physician · Madison, WI

Rebecca Williams, PHD is a surgery physician with a practice address in Madison, Wisconsin, and NPI 1538509294, issued on Jun 26, 2013. Check the license (Wisconsin 77226-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1538509294
Name
Rebecca Williams
Credential
PHD
Primary taxonomy
Surgery Physician 208600000X
License numbers
77226-20 WI
036165097 IL
Self-reported in NPPES; status is on the state search
Practice location
2905 Commercial Ave Apt 2, Madison, WI 53704
Phone
(608) 242-2888
Enumerated
Jun 26, 2013
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Rebecca Williams in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 77226-20
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

83% fewer Medicare Part D claims than the average surgery physician in 2024

29 Medicare Part D claims for 12 beneficiaries, against an average of 174 among the 21,427 providers of this specialty who prescribed in Part D.

  1. Rebecca Williams29
  2. Specialty average174

Most prescribed

  1. Calcitriol13 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's Medicare quality score for 2023: 77.4 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score81.8
  2. Costout of 100 · 30%62.1
  3. Promoting interoperabilityout of 100 · 25%77.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

One hospital or facility affiliation

  1. Northwestern Medical Faculty FoundationEvanston, IL

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Surgery Physician providers in Wisconsin

There are 786 surgery physician records in Wisconsin.

Other surgery physician records in Wisconsin

  1. Michael AabergMadison, WI1346991064
  2. Benjamin Abadeer, DOAppleton, WI1255541603
  3. Warren Abell, DOOsceola, WI1265407662
  4. Alexandra Acher, M.D.Madison, WI1487018008
  5. Marina Affi Koprowski, M.D.Milwaukee, WI1275065575
  6. Kaleem Ahmed, MD, MSAIMadison, WI1215780671
  7. David Al-Adra, MDMadison, WI1093224776
  8. Talal Al-Qaoud, MDMadison, WI1376093716
  9. Luis Alamo IrizarryMadison, WI1235639410
  10. Charles Alden, M.D.Wausau, WI1043212947

Common questions

What is Rebecca Williams, PHD's NPI number?

Rebecca Williams, PHD's National Provider Identifier (NPI) is 1538509294, issued on Jun 26, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Rebecca Williams, PHD located?

The NPPES record lists a practice address at 2905 Commercial Ave Apt 2, Madison, WI, 53704. Phone: (608) 242-2888. Providers update this record themselves, so call before visiting.

How can I verify Rebecca Williams, PHD's license?

NPPES lists Wisconsin license number 77226-20, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Rebecca Williams, PHD prescribe under Medicare Part D?

In 2024, Rebecca Williams, PHD had 29 Medicare Part D claims for 12 beneficiaries; the average among surgery physician prescribers was 174. Part D covers Medicare prescriptions only.

What is Rebecca Williams, PHD's Medicare quality score?

The 2023 MIPS final score is 77.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.